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<h1>Other PIA projects</h1>
<b>This is a list of other projects that aims to read PIA file in various way:<br>
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<a href=https://github.com/phusband/PiaNO title="AutoDesk PiaFile plot configuration library">PiaNO</a> a library to read and write all PIA file, written in C#, released under MIT license<br>
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<a href=https://github.com/BoxaShu/unzip_pc3 title="Compress and decompress printer.pc3 files for AutoCAD">unzip_pc3</a> a command line program that compress and decompress pc3, written in C#, without a license, public domain? <br>
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<a href=https://pypi.org/project/ezdxf/ title="A Python package to create/manipulate DXF drawings">ezdxf</a> library for DXF, but can also handle <a href=https://ezdxf.readthedocs.io/en/stable/addons/acadctb.html>.ctb and .stb</a>, written in Python,released under MIT license<br>
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<h1>Other unrelated but interesting CAD projects</h1>
<a href=https://www.gnu.org/software/libredwg/ title="GNU LibreDWG is a free C library to handle DWG files">LibreDWG</a>  is a free library to handle DWG and DXF files, written in C, released under GPLv3+ license<br>
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<a href=https://github.com/bert/libdxf title="Library with DXF related functions (work in progress)">libdxf</a> is a free library to handle DXF files, written in C, released under GPLv2+ license<br>
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<a href=https://sourceforge.net/projects/libdxfrw/ title="Library to read/write DXF files in binary and ascii form and to read DWG from r14 to v2015">libdxfrw</a> is a free library to handle DXF and partially DWG files, written in C++, released under GPLv2+ license<br>
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<a href=https://github.com/zamtmn/zcad title="Simple CAD program">zcad</a> is a free CAD program, written in Pascal, released under a modified LGPLv2 license (the exception can be removed, so a fork can be LGPLv2)<br>
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<a href=https://github.com/LibreCAD/LibreCAD_3 title="LibreCAD 3 is a next generation 2D CAD application">LibreCAD 3</a> is a modular 2D CAD application, written in C++, released under GPLv3+ license<br>
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